FR2183976A1 - - Google Patents

Info

Publication number
FR2183976A1
FR2183976A1 FR7316631A FR7316631A FR2183976A1 FR 2183976 A1 FR2183976 A1 FR 2183976A1 FR 7316631 A FR7316631 A FR 7316631A FR 7316631 A FR7316631 A FR 7316631A FR 2183976 A1 FR2183976 A1 FR 2183976A1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7316631A
Other versions
FR2183976B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2183976A1 publication Critical patent/FR2183976A1/fr
Application granted granted Critical
Publication of FR2183976B1 publication Critical patent/FR2183976B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • H04H20/89—Stereophonic broadcast systems using three or more audio channels, e.g. triphonic or quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Mathematical Analysis (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Stereophonic System (AREA)
  • Stereo-Broadcasting Methods (AREA)
FR7316631A 1972-05-09 1973-05-09 Expired FR2183976B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/251,836 US4316058A (en) 1972-05-09 1972-05-09 Sound field transmission system surrounding a listener

Publications (2)

Publication Number Publication Date
FR2183976A1 true FR2183976A1 (fr) 1973-12-21
FR2183976B1 FR2183976B1 (fr) 1977-12-30

Family

ID=22953617

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7316631A Expired FR2183976B1 (fr) 1972-05-09 1973-05-09

Country Status (15)

Country Link
US (1) US4316058A (fr)
JP (1) JPS4956504A (fr)
AT (1) AT348270B (fr)
BR (1) BR7303333D0 (fr)
CA (1) CA984301A (fr)
CH (1) CH595726A5 (fr)
DD (1) DD104674A5 (fr)
DE (1) DE2317123A1 (fr)
DK (1) DK143629C (fr)
ES (1) ES414569A1 (fr)
FR (1) FR2183976B1 (fr)
GB (1) GB1439174A (fr)
IT (1) IT984180B (fr)
NL (1) NL7306406A (fr)
SE (1) SE385426B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464745A (en) * 1981-11-27 1984-08-07 Sanders Associates, Inc. High dynamic range multiplexing system
US4752961A (en) * 1985-09-23 1988-06-21 Northern Telecom Limited Microphone arrangement
US4748669A (en) * 1986-03-27 1988-05-31 Hughes Aircraft Company Stereo enhancement system
US5625696A (en) * 1990-06-08 1997-04-29 Harman International Industries, Inc. Six-axis surround sound processor with improved matrix and cancellation control
FR2682249B1 (fr) * 1991-10-08 1993-12-03 Thomson Csf Procede de demodulation numerique d'un signal composite.
US5602923A (en) * 1994-03-07 1997-02-11 Sony Corporation Theater sound system with upper surround channels
US5661808A (en) 1995-04-27 1997-08-26 Srs Labs, Inc. Stereo enhancement system
US7031474B1 (en) 1999-10-04 2006-04-18 Srs Labs, Inc. Acoustic correction apparatus
US7277767B2 (en) * 1999-12-10 2007-10-02 Srs Labs, Inc. System and method for enhanced streaming audio
US9258664B2 (en) 2013-05-23 2016-02-09 Comhear, Inc. Headphone audio enhancement system
DE102021203639A1 (de) * 2021-04-13 2022-10-13 Kaetel Systems Gmbh Lautsprechersystem, Verfahren zum Herstellen des Lautsprechersystems, Beschallungsanlage für einen Vorführbereich und Vorführbereich

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2136450A5 (fr) * 1971-04-15 1972-12-22 Matsushita Electric Ind Co Ltd

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257511A (en) * 1960-04-18 1966-06-21 Zenith Radio Corp Stereo em transmission system
US3375329A (en) * 1967-05-02 1968-03-26 Francis E Ryan Monaxial quadraphonic recording system
US3708623A (en) * 1970-04-29 1973-01-02 Quadracast Syst Inc Compatible four channel fm system
US3679832A (en) * 1971-03-23 1972-07-25 Bell Telephone Labor Inc Three-channel fm stereo transmission
DE2327834C3 (de) * 1973-06-01 1979-09-13 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln Vorrichtung zum Trennen von Mischungen wenigstens teilweise schmelzflüssiger Metalle, Metallverbindungen und/oder metallhaltiger Schlacke in mindestens zwei Phasen unterschiedlicher Dichte

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2136450A5 (fr) * 1971-04-15 1972-12-22 Matsushita Electric Ind Co Ltd

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Revue DE FUNKSCHAU, vol. 44, No. 4, février 1972, pages 117 - 118, article 'Verfahren zur Ubertragung von drei oder vier Nf-Signalen über UKW-Sender' de MALLON *
Revue US JOURNAL OF THE AUDIO ENGINEERING SOCIETY, vol. 18, no. 2, avril 1970 , page 198, article: 'Time-Division Multiplex for Four-Channel FM de COOPER *
Revue US JOURNAL OF THE AUDIO ENGINEERING SOCIETY, vol. 20, décembre 1972, no. 10, pages 816-822, article 'Compatible FM Broadcasting of Panoramic Sound' de Gibson et al *

Also Published As

Publication number Publication date
BR7303333D0 (pt) 1974-07-11
ATA410373A (de) 1978-06-15
GB1439174A (en) 1976-06-09
DK143629B (da) 1981-09-14
CH595726A5 (fr) 1978-02-28
ES414569A1 (es) 1976-02-01
US4316058A (en) 1982-02-16
JPS4956504A (fr) 1974-06-01
DD104674A5 (fr) 1974-03-12
FR2183976B1 (fr) 1977-12-30
DK143629C (da) 1982-02-08
SE385426B (sv) 1976-06-28
IT984180B (it) 1974-11-20
AT348270B (de) 1979-02-12
NL7306406A (fr) 1973-11-13
CA984301A (en) 1976-02-24
AU5511573A (en) 1974-11-07
DE2317123A1 (de) 1973-11-22

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Legal Events

Date Code Title Description
ST Notification of lapse